Tech9 min
Regex Explained: How to Read Any Regular Expression
A regular expression is a tiny program that describes a shape in text, and it is read left to right as position, characters, and quantity. Learn that, plus the two things that separate people who use regex from people who fear it: greedy versus lazy matching, and the nested quantifier that once cost Cloudflare 27 minutes of traffic.
regexregular-expressionsprogramming-fundamentals